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LB1981V Datasheet(PDF) 7 Page - Sanyo Semicon Device

Part # LB1981V
Description  Three-Phase Brushless Motor Driver
PDF  9 Pages
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Manufacturer  SANYO [Sanyo Semicon Device]
Direct Link  https://www.sanyo-av.com/us/
Logo SANYO - Sanyo Semicon Device

LB1981V Datasheet(HTML) 7 Page - Sanyo Semicon Device

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LB1981V
No. 5917-7/9
Pin function
Motor counterelectromotive
voltage FG pulse pin.
Outputs a pulse using W
phase counterelectromotive
voltage as FG.
Connect to ground if not used.
Ground for all circuits except
output.
Coil waveform detect
comparator input pins.
Motor coil midpoint input pin.
Using this voltage as a
reference, the coil voltage
waveform is detected.
W phase coil output pin.
U phase coil output pin.
V phase coil output pin.
Output transistor ground.
Constant current drive is
performed by detecting the
voltage at this pin.
Pin number
23
24
25
26
27
28
29
1
2
30
Pin name
BFG0
Pin voltage
Equivalent circuit
Continued from preceding page
GND
WIN
UIN
VIN
COM
WOUT
UOUT
VOUT
RF
23
VCC1
50
µA
50
µA
30k
Ω
A10872
28
26
27
25
10
µA
2k
Ω
200
Ω
200
Ω
200
Ω
VCC2
A10873
30
29
1
2
3.9
Ω
3.9
Ω
VCC1
VS
A10874



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